enus Home It is the nearest planet to the Earth in the solar system. Besides the sun and the moon,Venus is the brightest object in the sky. It is called the "morning star"in the east at sun-rise,and the "evening star"in the west at sunset. The average temperature is about 475 degrees centigrade.Oxygen is rare there.Its atmosphere contains about 95%carbon dioxide (CO2). 4 Venus It is the nearest planet to the Earth in the solar system. Besides the sun and the moon, Venus is the brightest object in the sky. It is called the “morning star” in the east at sun-rise, and the “evening star” in the west at sunset. The average temperature is about 475 degrees centigrade. Oxygen is rare there. Its atmosphere contains about 95% carbon dioxide (CO2 )